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This is a rebuild of Drinking Water Watch and not yet the official record. Use the agency’s current Drinking Water Watch for anything you need to rely on.

Chemical and radiological sample results

MS0010007 , Oakland Water Works

25 of the 56 analytes this system has been tested for have been detected at least once, across 285 samples on record.

The other 31 were tested for and never found. An analyte is counted here if any result on record measured it, so this covers the whole history and not the samples listed below.

Across all 285 samples on record, detections range from August 24, 1993 to July 27, 2026. These figures cover the whole record.

What counts as a non-detect is defined in the help: Less than Indicator. This system’s violations.

What has been detected, ever

Every analyte measured above its reporting level at any point in this system’s record, most often detected first. This is not limited to the samples listed below.

Every analyte ever detected for Oakland Water Works, with how many results found it and when it was first and last detected. Covers the whole record, not only the samples listed below.
Analyte Kind Detected in First detected Last detected
Copper, Free 1022 Inorganic Chemical 147 of 155 results Aug 24, 1993 Sep 11, 2025
Lead 1030 Inorganic Chemical 130 of 155 results Aug 24, 1993 Aug 13, 2025
Nitrate-Nitrite 1038 Inorganic Chemical 29 of 29 results May 5, 2004 Jan 22, 2019
Nitrate 1040 Inorganic Chemical 29 of 29 results May 5, 2004 Jan 22, 2019
TTHM 2950 Organic Chemical 20 of 24 results Jun 25, 2007 Jul 23, 2025
Total Haloacetic Acids (Haa5) 2456 Organic Chemical 17 of 22 results Jun 25, 2007 Jul 27, 2026
Barium 1010 Inorganic Chemical 15 of 15 results Jan 15, 2002 Apr 6, 2020
Fluoride 1025 Inorganic Chemical 15 of 15 results Jan 15, 2002 Apr 6, 2020
Chromium 1020 Inorganic Chemical 14 of 15 results Jan 15, 2002 Sep 10, 2018
Nickel 1036 Inorganic Chemical 14 of 15 results Jan 15, 2002 Sep 10, 2018
Chloroform 2941 Organic Chemical 12 of 15 results Jun 25, 2007 Jul 23, 2025
Bromodichloromethane 2943 Organic Chemical 11 of 15 results Jul 14, 2008 Jul 23, 2025
Dibromochloromethane 2944 Organic Chemical 11 of 15 results Jul 14, 2008 Jul 23, 2025
Gross Alpha, Incl. Radon & U 4002 Radionuclide 11 of 11 results Dec 7, 2011 Mar 15, 2016
Combined Uranium 4006 Radionuclide 9 of 10 results Feb 6, 2012 Jul 9, 2018
Dichloroacetic Acid 2451 Organic Chemical 8 of 12 results Jul 14, 2008 Jul 27, 2026
Trichloroacetic Acid 2452 Organic Chemical 8 of 12 results Jul 14, 2008 Jul 27, 2026
Selenium 1045 Inorganic Chemical 7 of 15 results Jan 12, 2004 Mar 10, 2008
Monochloroacetic Acid 2450 Organic Chemical 3 of 12 results Sep 14, 2011 Jul 13, 2020
Arsenic 1005 Inorganic Chemical 3 of 15 results Dec 12, 2005 May 5, 2014
Cadmium 1015 Inorganic Chemical 3 of 15 results Jan 12, 2004 May 5, 2014
Uranium-238 4009 Radionuclide 3 of 3 results Dec 12, 2005 Jan 18, 2006
Sulfate 1055 Inorganic Chemical 2 of 2 results Jan 15, 2002 Jan 12, 2004
Monobromoacetic Acid 2453 Organic Chemical 1 of 12 results Jul 13, 2020 Jul 13, 2020
Cyanide 1024 Inorganic Chemical 1 of 14 results Jan 18, 2006 Jan 18, 2006

No date range is applied: this list draws on every sample on record. Show the last two years only.

The most recent samples, result by result

The table below lists 141–150 of 285 samples, newest first — collected January 18, 2011 to June 21, 2011. The summary above covers all 285.

37 results from the 10 samples listed here: 20 detected, 17 not detected. Across the whole record it is 523 of 969. A sample is analysed for many analytes at once, so one sample appears on as many rows as it had results.

Chemical and radiological sample results for Oakland Water Works, every result from 141 to 150 of 285 samples shown, newest first. Not detected means the amount was below the level the laboratory can reliably report, which is given beside it.
Result Analyte Monitoring period
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-014PB
Laboratory
MSDH Lab
0.1745 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0019 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 21, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-012PB
Laboratory
MSDH Lab
0.1237 mg/l , sample collected Jun 21, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0011 mg/l , sample collected Jun 21, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 20, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-020PB
Laboratory
MSDH Lab
0.03 mg/l , sample collected Jun 20, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0041 mg/l , sample collected Jun 20, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 20, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-013PB
Laboratory
MSDH Lab
0.0323 mg/l , sample collected Jun 20, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
0.0013 mg/l , sample collected Jun 20, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
Jun 20, 2011
Sampling point
DS000 Distribution
Sample type
Routine
Lab sample
110623-011PB
Laboratory
MSDH Lab
0.0066 mg/l , sample collected Jun 20, 2011, sampling point DS000 Copper, Free 1022 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Jun 20, 2011, sampling point DS000 Lead 1030 EPA method 200.8 Jan 1, 2009 – Dec 31, 2011
Collected
May 9, 2011
Sampling point
WL002 Well W002
Sample type
Routine
Lab sample
110510-020CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected May 9, 2011, sampling point WL002 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
May 9, 2011
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
110510-016CN
Laboratory
MSDH Lab
Not detected below 15 ug/l Minimum Reporting Level , sample collected May 9, 2011, sampling point WL001 Cyanide 1024 EPA method QC10204001X Jan 1, 2011 – Dec 31, 2013
Collected
Apr 25, 2011
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
110426-035IN
Laboratory
MSDH Lab
0.0006 mg/l , sample collected Apr 25, 2011, sampling point WL001 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.04 mg/l , sample collected Apr 25, 2011, sampling point WL001 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0051 mg/l , sample collected Apr 25, 2011, sampling point WL001 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.885 mg/l , sample collected Apr 25, 2011, sampling point WL001 Fluoride 1025 EPA method 380-75WE Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0005 mg/l , sample collected Apr 25, 2011, sampling point WL001 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL001 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Apr 25, 2011
Sampling point
WL002 Well W002
Sample type
Routine
Lab sample
110426-034IN
Laboratory
MSDH Lab
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Arsenic 1005 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.1236 mg/l , sample collected Apr 25, 2011, sampling point WL002 Barium 1010 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Cadmium 1015 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0154 mg/l , sample collected Apr 25, 2011, sampling point WL002 Chromium 1020 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.209 mg/l , sample collected Apr 25, 2011, sampling point WL002 Fluoride 1025 EPA method 380-75WE Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Mercury 1035 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
0.0029 mg/l , sample collected Apr 25, 2011, sampling point WL002 Nickel 1036 EPA method 200.8 Not recorded
Not detected below 0.0025 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Selenium 1045 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Antimony, Total 1074 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Beryllium, Total 1075 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Not detected below 0.0005 mg/l Minimum Reporting Level , sample collected Apr 25, 2011, sampling point WL002 Thallium, Total 1085 EPA method 200.8 Jan 1, 2011 – Dec 31, 2013
Collected
Jan 18, 2011
Sampling point
WL001 Well W001
Sample type
Routine
Lab sample
110119-020NI
Laboratory
MSDH Lab
1.13 mg/l , sample collected Jan 18, 2011, sampling point WL001 Nitrate-Nitrite 1038 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
1.13 mg/l , sample collected Jan 18, 2011, sampling point WL001 Nitrate 1040 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011
Not detected below 0.02 mg/l Minimum Reporting Level , sample collected Jan 18, 2011, sampling point WL001 Nitrite 1041 EPA method 353.2 Jan 1, 2011 – Dec 31, 2011

Routine (10).